Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army"; "Surveyed in 1927-1929 and 1931"; "Contour intervals 5 and 20...

Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army."; "Surveyed in 1921 and 1928."; "Contour interval 20 feet."; Coordinates:...

Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army"; "Surveyed in 1923 and 1927"; "Contour interval 20 feet"; Shows...